Cloned (Comment) | Organism |
---|---|
gene MGAT3, stable overexpression of the enzyme in WM-266-4-GnT-III human metastatic melanoma cells | Homo sapiens |
Protein Variants | Comment | Organism |
---|---|---|
additional information | WM-266-4-GnT-III human metastatic melanoma cells stably overexpress the MGAT3 gene together with mock control cells WM-266-4-pIRESneo | Homo sapiens |
Localization | Comment | Organism | GeneOntology No. | Textmining |
---|---|---|---|---|
Golgi apparatus | - |
Homo sapiens | 5794 | - |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
UDP-N-acetyl-alpha-D-glucosamine + beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc-N-Asn-[protein] | Homo sapiens | - |
UDP + beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-[beta-D-GlcNAc-(1->4)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc-N-Asn-[protein] | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Homo sapiens | Q09327 | - |
- |
Source Tissue | Comment | Organism | Textmining |
---|---|---|---|
carcinoma cell | - |
Homo sapiens | - |
melanoma cell | - |
Homo sapiens | - |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
UDP-N-acetyl-alpha-D-glucosamine + beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc-N-Asn-[protein] | - |
Homo sapiens | UDP + beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-[beta-D-GlcNAc-(1->4)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc-N-Asn-[protein] | - |
? |
Synonyms | Comment | Organism |
---|---|---|
GnT-III | - |
Homo sapiens |
MGAT3 | - |
Homo sapiens |
N-acetylglucosaminyltransferase III | - |
Homo sapiens |
General Information | Comment | Organism |
---|---|---|
malfunction | detailed glycomic analysis of the effect of GnT-III overexpression in WM266-4-GnT-III metastatic melanoma cells, overview. Overexpression of GnT-III in melanoma leads to modification of a broad range of N-glycan types by the introduction of the bisecting GlcNAc residue with highly branched complex structures among them. The presence of these unusual complex N-glycans results in stronger interactions of cellular glycoproteins with the PHA-L. Elevated activity of GnT-III in cancer cells does not necessarily lead to a total abrogation of the formation of highly branched glycans. The modification of pre-existing N-glycans by the introduction of bisecting GlcNAc can modulate their capacity to interact with carbohydrate-binding proteins such as plant lectins | Homo sapiens |
additional information | usage of MALDI-TOF and ESIion-trap-MS/MS together with HILIC-HPLC of 2-AA labeled N-glycans to study the N-glycome of membrane-attached and secreted proteins. Characterization of N-glycan epitopes on membrane and secreted proteins using plant lectins, several plant lectins are used in lectin blot assay, overview | Homo sapiens |
physiological function | N-acetylglucosaminyltransferase III (GnT-III) is known to catalyze N-glycan bisection and thereby modulate the formation of highly branched complex structures within the Golgi apparatus. While active, it inhibits the action of other GlcNAc transferases such as GnT-IVand GnT-V. Moreover, GnT-III is considered an inhibitor of the metastatic potential of cancer cells both in vitro and in vivo | Homo sapiens |